St. Louis Circuit Attorney Kim Gardner declined to press charges due to a lack of evidence

ST. LOUIS (KMOX) — The Missouri Attorney General will be investigating the case of a "daycare fight club" caught on video in St. Louis.

Eric Schmitt's office served a civil investigative demand Tuesday to Adventure Learning Center. He's seeking information about the late 2016 incident where kids could be seen fighting each other with "Hulk hands" while supervisors cheered and clapped along.

“Children are some of the most vulnerable members of our society, and any attempts to harm them in any way will not be tolerated,” said Schmitt in a statement. “My job is to protect all 6 million Missourians, and my office will continue to investigate and bring to justice those who seek to harm others.”

Schmitt's operation is separate from St. Louis Circuit Attorney Kim Gardner's office. Tena Dailey and Mickala Guliford were charged in November with first-degree endangering the welfare of a child, but Gardner dropped criminal charges against the two earlier this month, citing "insufficient evidence to obtain a conviction."

The women were initially accused of encouraging fighting that involved at least six children on Dec. 7, 2016. A 4-year-old boy, on his birthday, suffered a black eye, the charges alleged.​ A lawsuit over the fight is still pending.